The Eclipe Eiffel Development Tools (EDT) are a
set of plugins which implement a full-fledged,
highly integrated Eiffel development environment
based on the Eclipse Platform. The EDT plugins
contribute a number of facilities specific to
Eiffel, such as an Eiffel builder, a Cluster
Explorer, and Refactorings.

Origo is a software development and collaboration
platform. It provides services that help develop
software, such as source control management, issue
tracking, wiki, release management, chat, blog,
and forum. It uses an API to unify different tools
and provides a common way to stay informed about
changes in your projects. The API also allows you
to integrate other tools into the plaform easily.

Liberty Eiffel is a compiler for the Eiffel programming language. It continues the development of SmartEiffel, the GNU Eiffel Compiler. It is a complete, small, and fast Eiffel compiler, including an Eiffel to C compiler, documentation tools, a pretty printer, a debugger, and various other tools. It also includes a large library of classes distributed under the terms of the MIT/X Consortium License and a comprehensive set of wrappers/bindings for widespread free software libraries. Eiffel is an advanced object-oriented programming language that emphasizes the design and construction of high-quality and reusable software.

Visual Paradigm for UML is a Unified Modeling Language (UML) design tool that supports all UML diagrams, SysML diagrams, and entity relationship diagrams. Visual Paradigm for UML provides extensive use case modeling features, including full function UML use case diagram, flow of events editor, use case/actor grid, and activity diagram generation. Visual Paradigm for UML produces system documentation in PDF, HTML, and MS Word formats. A developer can design system documentation with the template designer. A system analyst can estimate the consequences of changes with impact analysis diagrams, such as matrix and analysis diagram. Visual Paradigm for UML generates Java code.

xplain2sql converts files from Xplain to SQL. It supports a very large subset of Xplain, and it can convert from Xplain to Microsoft SQL Server, DB/2,
Inprise InterBase, PostgreSQL, Oracle, MySQL 5, SQLite 3 or ANSI-92 SQL. It can also generate an XML description of the generated SQL. This XML description can be used to create low-level middle-tier code. Example stylesheets for Eiffel/ECLI and Delphi/ADO are included. The C source code release should compile on any platform with an ANSI C compiler. There are binary releases for FreeBSD, Linux, Solaris x86, and Windows 2000.

codemetre allows you to compare different versions of your software project, determining how and how much source files have changed. It currently recognizes both source code and comments from Ada, Bash shell, C, Eiffel, SQL, and more. It can also provide you with metrics on any single snapshot of your project.

SmartEiffel is the GNU Eiffel Compiler. It is intended to be a complete, though small and very fast, Eiffel compiler. The current distribution includes an Eiffel to C compiler, documentation tools, a pretty printer, and various other tools including an Eiffel debugger. It also includes a large library of classes distributed under the terms of the MIT/X Consortium License. Eiffel is an advanced object-oriented programming language that emphasizes the design and construction of high-quality and reusable software.